Counter-skiving machine



Sept. 28 1926.

-C. W. BAILEY QOUNTER SKIVING MACHINE Filed Feb. 11, 1922 5 Sheets-Sheet2 I l I l Ir Sept. 28 1926;. I 1,600,968- c. W. BAILEY COUNTER SKI VI NGMKGHINE Filed Feb. 11, 1922 5 Sheets-Sheet 5 Ox ggg.

Sept. 28 1926.

c. w. BAILEY COUNTER SKIVING MACHINE Filed Feb. 11, 1922 5 Sheets-Sheet4 Sept. 28,1926. 1,600,968

C. W. BAlLEY COUNTER SKIVING MACHINE Filed Feb 11, 1922 .5 Sheets-Sheet5 Patented Sept. 28, 1%26.

CHARLES W. BAILEY, F LYNN, MASSACHUSETTS, ASSIG-NOR TO JOHN HAMMONDSTEVE/ART, (3F LYNNFIELD, MASSACHUSETTS.

coUurEn-snrvrns MACHINE.

Application filed February 11, 1922. Serial No. 535,702.

This invention relates to machines for skiving counter stiffener blanksand is of that type wherein the blanks are fed from a supply holder orstack to feed rolls, one of which is recessed to conform to the desiredcontour, and which properly present them to a fixed skiving knife.

Among the novel features of this machine is an improved mechanism forshaping the blanks to conform to the contour of the recessed roll and anovel form of feed roll used in conjunction therewith. In this mechanismthe blank is held in position by a series of independent resilientlyacting fin gers engaging the blank along a plurality of closely spacedlines of contact and adjustable as a unit toward and from a skivingknife. The feeding mechanism engages the work between the lines ofcontact of the fingers.

This invention also provides an improved mounting for the knife andmeans by which it may be adjusted.

Further objects and advantageous details and combinations of parts willappear from a more complete description of the embodiment thereofdisclosed in the accompanying drawings, in which Figure 1 is an end viewof the machine looking in the direction in which the work is fed.

Figure 2 is a side elevation of the machine.

Figure 3 is a longitudinal central section on line 33 of Figure 4:.

Figure 4 is a plan view with portions broken away.

Figure 5 is a fragmentary sectional detail showing one of the presserfingers and adj acent parts.

Figure 6 is a section on line 66 of Figure 5.

Figure 7 is a fragmentary plan of the parts shown in Figure 5.

Figures 8 and 9 are a side elevation and plan respectively of the endportion of a i turned to adjust the spaces therebetween to conform todifferent sizes of blanks. The rods 2 extend downwardly towards theplatform or table 1 and are adjusted vertically in the clamps 3 so as toallow space for the passage thereunder of a single blank which may befed to the skiving mechanism to be described.

The feed means for this blank comprises a siide 4:, having a push plate5 extending across the upper face of the table, this'slide being movedtoward and from a pair of feed rolls by mechanism to be described later.These feed rolls comprise an upper matrix roll 6 and a lower feed roll7. As shown more particularly in Figures 8 and 5, the matrix roll 6 isrecessed at 8 to conform to the shape of the blank to be skived. Theblanks presented thereto by the feed plate 5 are pressed into the recess8 by means of a se ries of presser fingers 9, arranged in parallelspaced relation in a series extending longitudinally of the feed rollsand fulcrumed on a shaft 10 extending parallel therewith. Shaft 10 isfixed to a frame 100 slidingly mounted on the machine frame andadjustable through bolt and slot connections 101 to move the fingers 9substantially in the line offeed toward and from the! skiving knife tobe later described. It is found that different grades of work requiredifferent adjustments of the fingers relative to the knife for bestresults. The rear ends of these fingers or levers have attached theretothe upper ends of a series of coil springs 11, the lower ends of thesesprings being made fast to rods 12, passed down through he frame A ofthe machine and threaded in adjusting nuts 18'. In order to allow roomfor these springs, they are placed in a series of rows in staggeredrelation, as shown more clearly in Figure 1. The lower ends of rods 12extend within check nuts 14, positioned below the adjusting nuts 13.These check nuts extend sufficiently downward from the machine frame tobe accessible at their lower ends to tools, by which they may be turned,transverse slots 15 being formed in the ends thereof for engagement bysuch tools. Inwardly of the springs 11 each lever 9 passes through anotch in the upper end of a stop plug 16, these plugs having rotatablymounted in the lower ends thereof a series of screws 17, (see moreparticularly Figures 5 and 6,) threaded in a cross frame member 20. Attheir lower ends the screws 17 are provided with pins 18 passedtransversely therethrough, which serve as handles by which they may berotated for adjustment. it 19 are shown a series of nuts on the upperends of the screws, which bear beneath the cross member 20, and by whichthe upward position of the plugs 16 may be limited. The fingers orlevers 9 may be provided at their forward ends with removable wearplates 21, as shown in Figures 5, 8 and 9. In Figure 5 the wear memberis shown as having a dovetailed portion at its rear end, fitting adovetailed groove in the linger 9, while in Figures 8 and 9 the member21 is shown as a rectangular plate made fast in its position by screws.By adjustment of the tension on the springs 11 and of the position ofthe plugs 16, the pressure exerted by the ends of the fingers on thework presented to the gauge roll 6 and the limit of motion theretowardmay be adjusted. The feed roll 7 is composed of a series of spacedserrated flange portions or discs 22 which extend upwardly betweenadjacent fingers 9 to engage work as presented from the feed plate 5 andwhen the dovetail wear pieces shown in Figure 5 are employed, thesemembers, which are removable by displacement laterally relative to theircorresponding fingers, are held in position, when the parts are.assembled, by the flange or disk portions 32 on opposite sides thereof.

In order to insure that the blank is pre sented in proper timed relationto the matrix roll 6, the following drive mechanism for the parts hasbeen provided. Referring to Figure 1, at 25 and 26 are shown fast andloose pulleys carried by a main operating shaft 27, which carries on itsinner end a gear 28 meshing with a gear 29 rotatable with a shaft 31 towhich is fixed the gauge roll 6. Shaft 31 also carries a gear 30 meshingwith a gear 2 carried by a shaft 320. This gear also meshes with a gear33 journaled on a stud 330, and gear 33 meshes with a gear 3% fixed to ashaft 340 which carries the feed roll '7. This con struction permitsroll 7 to move vertically relative to the gauge roll 6 withoutinterfering with the proper meshing of the actuating gears.

it the opposite end of the shaft 31 from the gear 30 is fixed a disc orwheel Positioned adjacent to the disc t9 anu journaled on the shaft 31is a plate lllOlTll'lGl 50 having an arcuate slot 51 therein, throughwhich extends a stud 52 made fast in the disc 49. A nut 53 is threadedon this stud and by tightening of this nut the angular relation betweenthe disc and plate may be adjustably fixed. The plate 50 carries an arm54-, to the end of which is pivoted at one end of a link 56. The otherend of this link is pivoted at 57 to a rocker plate 58 fulcrumed at 59to the machine frame. A

link 0 is pivoted at one end at (ll to the rocker plate 58 and at itsother end to the slide i at (5'2. it is therefore evident that byadjustin' the angular position of the plate 50 on t )2 disc it, thetiming of the motion of the s 5 ma}. be 7 usted relative to the recess 5of the matrix roll so that the blanks may be positioned properlyrelative thereto.

The feed roll shaft 3: is mounted in hearings in a yoke frame 335, andso that it ma: conform to different thicknesses of wot this yoke frameis spring supported from the main frame of the machine. For this p posea coil spr shown at 36, is employed, which is seated within a boss 37,de ending from the yoke t id surrounds a guide pin projecting downwardlythrough sleeve 39 threaded at L0 in the frame of the machine. The pin 38is made fast at its upper end by a transverse pin 4-1 to the yohe 2-35.and the lower end of this pin passes through a perforation 1-2 in aninverted yoke memter i3, made fast to the under side of the machineframe. Below this yoke frame a pair of collars i-la id 45,

lmndle? i(3 and ii c:-:tending therefrom, are th eaded on the pin 38 andprovide means for adjusting the extent of upward motion of the feedroll. The spring on the upper end of the sleeve; 30, ve having a s ofperforations -i at its lower end for the reception of a t rner wrench bywhich it may be turned ljust it vertically in the frame to adjusttension of the spr ng 3 3.

The blanks as prese d to the matrix roll are then to be skived by afixed knife, shown at 70. This knife is made fast by a screw and slotconnection, shown at Tl, to the upper face of a knife holder or blockT2, having a pair of rails 73 l'ifittl at its upper surface andprojecting toward the bite of the rolls 6 and T, where they terminate inupwardly extending stop portions 7' The knife adjusted on the blocl: sothat the ends of its cutting edge abut against the stops 'T-l and forthis purpose a screw T5 threaded in the support TU beneath the knife,the head T6 of this screw projecting above its rear edge. The knifeholder id is provided with laterall .xiendiug ears 77 which are mountedto ide in a guidewav 78 in a vertical slide "O, the stud if) surmountedby clamp nuts St) and passing through slots 81 in these cars serving 1hold the knife holder 72 in adjusted position. The rear end of thil-znife holder has a downwardly extending slotted yoke portion S2 forrecei ing the shank of a screw 83 threaded at 8% into the slide 780 andhaving a collar 85 fixed thereto engaging between the forks. The outerend of the screw 83 has a knurled adjusting head 86. The vertical slideT80 011 which the knife lide i carrying the feed plate block is carriedis provided with an indexing mark cooperating with a zero line on theknife block as shown at 87 on Figure 2. As the cuttin edge of the knifeis positioned against the. stop plugs 74 this index is accurate at alltimes.' The vertical slide 780 has a pair of outwardly extending cars 90and 91, each having a vertical slot 92 therein for the reception of astud 93 threaded in the frame of the machine, and on the outer end ofeach is threaded a clamping member 9-1. The ear 91 has a flange 95 atits lower end, through which passes an adjusting screw 96 threaded inthe machine frame and carrying a knurled wheel 97, by which it may beturned, and a knurled adjusting nut 98 by means of which it may be fixedin position. By this knife mounting the vertical and horizontalpositions of the knife may be accurately adjusted relative to the biteof the feed rolls.

It should be evident from the above that the blanks are fed from thestack in. sequence beneath the lower end of the fingers or rods 2'to thematrix roll 6 and feed roll '4. are pressed into the recess of thematrix roll, and in that position fed to the fixed knife which skivesthe blank to the proper form. The skived blank is then passed out of themachine over the upper surface of the knife.

Having thus described a machine embodying this invention, it should beevident that many changes and modifications might be made thereinwithout departing from its spirit or scope as defined by the appendedclaims.

I claim:

1. A skiving machine comprising a recessed matrix, a skiving knife incooperative' relation to said matrix, a series of levers, means forpressing the ends of said levers against the work to retain it in therecess in said matrix, a stop block for each of said levers, and meansfor adjusting said blocks.

2. A skiving machine comprising a matrix roll, a skiving knife incooperative relation to said roll, and a series of independently actingelements for pressing the work against said rolladjustable as a unittoward and from said knife and individually toward and from said matrixroll.

3. A skiving machine comprising complemental rolls, one of whichcontains a matrix for giving contour to the piece to be skived, a knifeplaced to skive the articles delivered from between said rolls,resiliently acting pressers extending between the rolls toward the knifeand yieldingly near the matrix roll and being displaced from the latteragainst yielding resistance, a holder for said pressers movably mountedon the machine in a manner permitting it to be adjusted with thepressers toward or away from the knife and means for adjusting theseveral pressers together and individually toward and from said matrixroll.

4. A skiving machine comprising a matrix roll. a skiving knife incooperative relation to said roll, and a series of independently actingelements for pressing the work against said roll adjustable as a unittowardand from said knife and individually and as a unit toward and fromsaid matrix roll.

5. A skiving machine having a recessed matrix member, a knife foroperating on work presented thereto by said member, a series of workfeeding elements spaced laterally of the line of feed, a series ofelements for pressing the work into the recess of said member eachposition in the space between adjacent feeding elements, and a workengaging wear piece detachably held in each pressing element by thefeeding elements on opposite sides thereof.

6. A skiving machine having a recessed matrix member, a knife operatingon work presented thereto by said member, work feeding memberscooperating with said matrix member, elements for pressing the work intothe recess of said member, and wear pieces associated with said elementsand held in position by said feeding means.

7. A skiving machine having a skiving knife, a recessed matrix roll, afeed roll, a series of spaced work engaging flanges cooperating withsaid matrix roll to present work to said knife, a series of presserelements between adjacent flanges, and a wear piece associated with eachelement and detachable therefrom by a lateral motion relative thereto,said pieces when the parts are assembled extending between said flangesand being prevented from detachment from said elements thereby.

8. A skiving machine having a skiving knife, a recessed matrix roll, afeed roll, a series of spaced work engaging flanges cooperating withsaid matrix roll to present work to said knife, a series of presserelements betweenadjacent flanges and a wear piece having a dovetailconnection with each element, said pieces when the parts are assembledextending between said flanges and being prevented from detachment fromsaid elements thereby.

In testimony whereof I have affixed my signature.

CHARLES W. BAILEY.

